A kind of preparation method of sapo-11 molecular sieve
A SAPO-11, molecular sieve technology, applied in the direction of molecular sieve and alkali-exchanged phosphate, molecular sieve characteristic silicoaluminophosphate, etc., can solve problems such as unfavorable industrial production, complicated condition control, etc., and achieve easy industrial production, simple synthesis process, and operation. handy effect
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Embodiment 1
[0021] The first step is the preparation of the reaction mixture
[0022] Al in the aluminum source according to the molar ratio 2 O 3 : P in phosphorus source 2 O 5 : SiO in silicon source 2 : Organic amine template: Metal cation in the additive: Water is 1:1:0.4:0.7:0.3:30, the reaction mixture is prepared, the aluminum source is alumina, the silicon source is silica sol, and the phosphorus The source is phosphoric acid, the organic amine template is di-n-propylamine, and the additive is NaOH;
[0023] The second step of hydrothermal treatment
[0024] The reaction mixture prepared in the previous step is transferred to an autoclave, and hydrothermally treated at 170°C for 24 hours, then filtered, washed, dried at 100-120°C for 10 hours, and calcined at 550°C for 10 hours to obtain the product.
[0025] The XRD spectrum of the dry sample SAPO-11 molecular sieve powder during synthesis is shown in figure 1 Medium A, the XRD spectrum of SAPO-11 molecular sieve is shown in figure 1 M...
Embodiment 2
[0029] The implementation process is the same as in Example 1 except for the following differences:
[0030] In the first step, the additive is Na 2 CO 3 ; In the second step, hydrothermal treatment at 150 ℃ for 72 hours. Get the product.
[0031] The XRD spectrum of SAPO-11 molecular sieve and figure 1 The C is similar.
Embodiment 3
[0033] The implementation process is the same as in Example 1 except for the following differences:
[0034] In the first step, massage the Al in the Albi aluminum source 2 O 3 : P in phosphorus source 2 O 5 : SiO in silicon source 2 : Organic amine template: Metal cation in additive: Water is 1:0.8:0.4:0.35:0.5:60. Get the product.
[0035] The XRD spectrum of SAPO-11 molecular sieve and figure 1 The C is similar.
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